transistors

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# Clue Answer As Given Value Round Category Air Date Show
A big hit with 1960s scientists, the CDC 1604 was one of the first computers with these instead of vacuum tubes transistors $600 J COMPUTER HISTORY 2015-09-28 #7136
They were invented in 1947 & by the 1990s millions were being placed on a single chip transistors $500 J 20th CENTURY INVENTION 1998-07-16 #3214
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